Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/file_system_provider/operations/read_file.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/file_system_provider/operations/read_file.h"
 
 #include <stddef.h>
 
 #include <limits>
 #include <string>
 #include <utility>
 
 #include "base/trace_event/trace_event.h"
 #include "chrome/common/extensions/api/file_system_provider.h"
 #include "chrome/common/extensions/api/file_system_provider_internal.h"
 
 namespace chromeos {
 namespace file_system_provider {
 namespace operations {
 namespace {
 
 // Convert |value| into |output|. If parsing fails, then returns a negative
 // value. Otherwise returns number of bytes written to the buffer.
-int CopyRequestValueToBuffer(scoped_ptr<RequestValue> value,
+int CopyRequestValueToBuffer(std::unique_ptr<RequestValue> value,
                              scoped_refptr<net::IOBuffer> buffer,
                              int buffer_offset,
                              int buffer_length) {
   using extensions::api::file_system_provider_internal::
       ReadFileRequestedSuccess::Params;
 
   const Params* params = value->read_file_success_params();
   if (!params)
     return -1;
 
@@ skipping 42 matching lines @@
 
   return SendEvent(
       request_id,
       extensions::events::FILE_SYSTEM_PROVIDER_ON_READ_FILE_REQUESTED,
       extensions::api::file_system_provider::OnReadFileRequested::kEventName,
       extensions::api::file_system_provider::OnReadFileRequested::Create(
           options));
 }
 
 void ReadFile::OnSuccess(int /* request_id */,
-                         scoped_ptr<RequestValue> result,
+                         std::unique_ptr<RequestValue> result,
                          bool has_more) {
   TRACE_EVENT0("file_system_provider", "ReadFile::OnSuccess");
   const int copy_result = CopyRequestValueToBuffer(std::move(result), buffer_,
                                                    current_offset_, length_);
 
   if (copy_result < 0) {
     LOG(ERROR) << "Failed to parse a response for the read file operation.";
     callback_.Run(
         0 /* chunk_length */, false /* has_more */, base::File::FILE_ERROR_IO);
     return;
   }
 
   if (copy_result > 0)
     current_offset_ += copy_result;
   callback_.Run(copy_result, has_more, base::File::FILE_OK);
 }
 
 void ReadFile::OnError(int /* request_id */,
-                       scoped_ptr<RequestValue> /* result */,
+                       std::unique_ptr<RequestValue> /* result */,
                        base::File::Error error) {
   TRACE_EVENT0("file_system_provider", "ReadFile::OnError");
   callback_.Run(0 /* chunk_length */, false /* has_more */, error);
 }
 
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos